JP4417245B2 - Internal mixed air atomizing spray nozzle assembly - Google Patents

Internal mixed air atomizing spray nozzle assembly Download PDF

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JP4417245B2
JP4417245B2 JP2004503170A JP2004503170A JP4417245B2 JP 4417245 B2 JP4417245 B2 JP 4417245B2 JP 2004503170 A JP2004503170 A JP 2004503170A JP 2004503170 A JP2004503170 A JP 2004503170A JP 4417245 B2 JP4417245 B2 JP 4417245B2
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liquid
flow path
orifice
nozzle
expansion chamber
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JP2005524527A5 (en
JP2005524527A (en
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ホフマン，デイヴィッド，シー．
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スプレイング システムズ カンパニー
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0466—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the central liquid flow towards the peripheral gas flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
    • B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
    • B05B7/0475—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber with means for deflecting the peripheral gas flow towards the central liquid flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/003—Arrangements of devices for treating smoke or fumes for supplying chemicals to fumes, e.g. using injection devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J7/00—Arrangement of devices for supplying chemicals to fire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nozzles (AREA)

Abstract

A nozzle for atomizing and spraying liquid is provided. The nozzle includes a longitudinal liquid flow passageway that terminates in a liquid orifice for directing a stream of liquid along a predetermined axis. A plurality of intersecting, transverse passageways extend perpendicular to and intersect the predetermined axis. Each of the transverse passageways terminates at either end in an outlet. The transverse passageways define a first impingement surface downstream of the liquid orifice for breaking up a stream of liquid impinging thereon into a laterally spreading dispersion which disperses through the transverse passageways. An air annulus is arranged in surrounding relation to the outlets of the transverse passageways and oriented to discharge air in a downstream direction so as to strike the fluid dispersed through the outlets of the transverse passageways. An expansion chamber is arranged downstream of the transverse passageways and air annulus. The expansion chamber communicates with a nozzle discharge orifice.

Description

関連出願の相互参照Cross-reference of related applications

[0001]本発明は、米国仮特許出願６０／３７８，３３７号の利益を主張する。   [0001] The present invention claims the benefit of US Provisional Patent Application No. 60 / 378,337.

発明の分野Field of Invention

[0002]本発明は、概して、スプレーノズル組立体に関し、特に、液体をノズルから放出する前に加圧空気により霧化するスプレーノズル組立体に関する。   [0002] The present invention relates generally to spray nozzle assemblies, and more particularly to a spray nozzle assembly that atomizes liquid with pressurized air prior to discharge from the nozzle.

発明の背景Background of the Invention

[0003]加圧空気を用いて液体を比較的小さい粒子寸法に分解するスプレーノズル組立体が知られている。このようなノズル組立体は、特に、ガススクラビング（ガス浄化）、すなわち、アンモニア又は尿素を燃焼ガスの放出流に噴霧して一酸化窒素又はその他の燃焼副生成物を除去する用途に用いられる。このような先行技術のスプレーノズルに関する問題は、液体粒子の十分な分解及び霧化を達成するために比較的高圧の空気を必要とし、これが資本費及び動作コストを増大させることである。   [0003] Spray nozzle assemblies are known that use pressurized air to break up liquids into relatively small particle sizes. Such nozzle assemblies are particularly used in gas scrubbing, i.e., applications where ammonia or urea is sprayed onto the combustion gas discharge stream to remove nitric oxide or other combustion by-products. The problem with such prior art spray nozzles is that relatively high pressure air is required to achieve sufficient decomposition and atomization of the liquid particles, which increases capital and operating costs.

発明の概要Summary of the Invention

[0004]本発明の目的は、液体スプレーを効率的に噴霧するために、より低い空気圧で動作させることができるスプレーノズル組立体であって、放出されるスプレーが微細な液体粒子の分布を有さなければならないガススクラビング又はその他の用途に用いられるスプレーノズル組立体を提供することにある。   [0004] An object of the present invention is a spray nozzle assembly that can be operated at a lower air pressure to efficiently spray a liquid spray, wherein the spray that is emitted has a distribution of fine liquid particles. It is an object to provide a spray nozzle assembly for use in gas scrubbing or other applications that must be performed.

[0005]このために、液体を霧化及び噴霧するためのノズルを提供する。ノズルは、液体の流れを予め決められた軸に沿って方向付けるための、液体オリフィスを終端とする長手方向の液体流路を含む。複数の交差する横断通路が、前記予め決められた軸に対して垂直に延在し、且つ前記軸と交差する。横断通路の各々は、その両端にて出口を終端とする。横断通路は、液体オリフィスの下流に、液体の流れを衝突させて破断するための第１の衝突面を画成し、破断された液体流は、横方向に拡散する分散物となり、横断通路を通って分散する。エアアニュラス(air annulus)が、横断通路の出口を取り囲むように配置され、エアアニュラスは、横断通路の出口を通って分散された流体に空気を衝突させるように空気を下流方向に放出するように向けられている。膨張チャンバが、横断通路及びエアアニュラスの下流に配置されている。膨張チャンバはノズルの放出オリフィスと連通している。   [0005] To this end, a nozzle for atomizing and spraying a liquid is provided. The nozzle includes a longitudinal liquid flow channel terminating in a liquid orifice for directing the flow of liquid along a predetermined axis. A plurality of intersecting transverse passages extend perpendicular to and intersect the predetermined axis. Each of the transverse passages terminates at the exit at both ends. The transverse passage defines a first impingement surface downstream of the liquid orifice for impinging and breaking the liquid flow, and the broken liquid flow becomes a laterally diffusing dispersion, Disperse through. An air annulus is arranged to surround the exit of the transverse passage, and the air annulus releases the air in a downstream direction so that the air collides with the dispersed fluid through the exit of the transverse passage. Is directed. An expansion chamber is disposed downstream of the transverse passage and the air annulus. The expansion chamber is in communication with the discharge orifice of the nozzle.

好適な実施形態の説明DESCRIPTION OF PREFERRED EMBODIMENTS

[0008]ここで図面の図１をより詳しく参照すると、本発明に従うマルチステージ（多段階式）スプレーノズル組立体１０が示されている。スプレーノズル組立体１０は、本出願と同一の譲受人に譲渡された米国特許第５，３７２，８８５号に示されたマルチステージ空気式霧化スプレーノズル組立体に対して改良されているが、幾つかの点にてこのスプレーノズル組立体に類似しており、この特許の開示を援用して本文の記載の一部とする。例示された実施形態において、ノズルは、本体主要部を含む、複数部品から成る本体を含み、本体主要部は、上方に延在する、外ねじ付きのネックを有し、ネックは、加圧流体をノズルに配送するためのラインに取り付けられようになっている入口を画成している。ノズル先端が本体主要部の下に配置され、且つその位置に、連結ナットにより着脱可能に取り付けられている。以下により詳細に説明するように、ノズルの１以上の放出オリフィスがノズル先端に形成されている。   [0008] Referring now more particularly to FIG. 1 of the drawings, there is shown a multi-stage spray nozzle assembly 10 according to the present invention. The spray nozzle assembly 10 is an improvement over the multi-stage pneumatic atomizing spray nozzle assembly shown in US Pat. No. 5,372,885, assigned to the same assignee as the present application, It is similar in some respects to this spray nozzle assembly, and the disclosure of this patent is incorporated herein by reference. In the illustrated embodiment, the nozzle includes a multi-part body that includes a main body, the main body having an externally threaded neck, the neck being a pressurized fluid. Defines an inlet that is adapted to be attached to a line for delivering the nozzle to the nozzle. The nozzle tip is disposed below the main part of the main body, and is detachably attached to the position by a connecting nut. As will be described in more detail below, one or more discharge orifices of the nozzle are formed at the nozzle tip.

[0009]スプレーノズル組立体１０の本体は、長手方向に延在する中央液体流路１２を有する液流管１１を含み、流路１２は、ノズル内に向けられた液体を、ノズル入口を通し、より小さい直径を有する長手方向流路１４に流入させるように導く。より小さい直径を有する長手方向流路は、流体オリフィス１７を介して、等間隔に配置された、互いに交差する複数の横断通路又はクロスホール１５と連通している。この場合、クロスホール１５の各々が、液流管の長手方向流路１２，１４の中心線に対して垂直に、且つ中心線と交差して延在している。液体流路１２に導入される液体流は、低減された直径を有する通路１２を通って加速され、交差クロスホール１５により形成されたチャンバの端壁１６に衝突する。加速している液体が端壁１６に衝突するため、液体は、霧化された液体粒子の半円形の扇又はシートの形状を成して外部に向けられ、流路１２，１４の長手方向軸に対してほぼ垂直に放出される。低減された直径を有する液体流路１４が、クロスホール１５の直径より大きくなく、好ましくは、クロスホール１５の直径よりも小さいことが重要である。   [0009] The body of the spray nozzle assembly 10 includes a liquid flow tube 11 having a central liquid flow path 12 extending in a longitudinal direction, the flow path 12 passing liquid directed into the nozzle through a nozzle inlet. Leading to a longitudinal channel 14 having a smaller diameter. The longitudinal flow path having a smaller diameter communicates with a plurality of transverse passages or cross holes 15 that are spaced apart at equal intervals through a fluid orifice 17. In this case, each of the cross holes 15 extends perpendicularly to the center line of the longitudinal flow paths 12 and 14 of the liquid flow tube and intersects the center line. The liquid flow introduced into the liquid flow path 12 is accelerated through the passage 12 having a reduced diameter and impinges on the end wall 16 of the chamber formed by the crossing cross hole 15. Since the accelerating liquid impinges on the end wall 16, the liquid is directed outwardly in the form of a semicircular fan or sheet of atomized liquid particles and the longitudinal axis of the channels 12, 14. Is emitted almost perpendicularly to. It is important that the liquid flow path 14 having a reduced diameter is not larger than the diameter of the cross hole 15, preferably smaller than the diameter of the cross hole 15.

[0010]液体粒子の分解をさらに高めるために、スプレーノズル組立体は、複数の入口通路２１から流入する加圧空気を受ける内側チャンバ２０と、内側にて広がった丸み付き通路、すなわちエアアニュラス（環状開口部）２４を画成するエアガイド２２とを含む第２のステージを含む。エアアニュラス２４は、ノズル組立体の長手方向軸に対して平行な高速の環状エアカーテンを形成し且つ方向付けるように空気流を流通させる。この環状の加圧空気流が、第１ステージのクロスホール１５から放出された、霧化された扇状の液体スプレーに衝突して、液体粒子をさらに微細に霧化する。   [0010] To further enhance the breakdown of liquid particles, the spray nozzle assembly includes an inner chamber 20 that receives pressurized air flowing from a plurality of inlet passages 21 and a rounded passage or air annulus (inner) A second stage including an air guide 22 defining an annular opening 24. The air annulus 24 circulates air flow to form and direct a high speed annular air curtain parallel to the longitudinal axis of the nozzle assembly. This annular pressurized air flow collides with the atomized fan-shaped liquid spray discharged from the first stage cross hole 15 to further atomize the liquid particles.

[0011]本発明に従えば、スプレーノズル組立体１０は、内側に向って先細にされたファンネル（漏斗状部）２５を画成する混合物ガイド２４を含む第３のステージを有する。ファンネル２５は、第２ステージによる霧化された粒子を中央の高速流のストリームに方向付けるためにある。このストリームは、ノズル先端の下端から上方に突出する衝突ピン２８の平坦な端面２６に向って方向付けられ、端面２６に衝突する。衝突ピンは、霧化された混合物の粒子寸法を、さらに分解して低減する。次いで、混合物は、膨張チャンバ２９内にて衝突ピン２８の周囲で膨張することが可能にされ、それにより、霧化された混合物中の液体粒子が混ざり合って、より大きい粒子を再形成することが防止される。   In accordance with the present invention, the spray nozzle assembly 10 has a third stage that includes a mixture guide 24 that defines a funnel 25 that tapers inwardly. The funnel 25 is for directing the atomized particles from the second stage to the central high-speed stream. This stream is directed toward the flat end surface 26 of the collision pin 28 protruding upward from the lower end of the nozzle tip, and collides with the end surface 26. The impact pin further reduces and reduces the particle size of the atomized mixture. The mixture is then allowed to expand around the impingement pin 28 in the expansion chamber 29 so that the liquid particles in the atomized mixture are mixed together to reform larger particles. Is prevented.

[0012]最後に、ノズル組立体は、スプレー先端の多数の放出オリフィス３０を含む第４のステージを含み、オリフィス３０は、衝突ピン２８に対して周方向に間隔をあけて配置され、膨張チャンバからの出口となっている。例示された実施形態において、放出オリフィス３０は、ノズル組立体の長手方向軸に対して外向きに角度付けられている。空気流との混合物が、複数のオリフィス３０を通して大気中に放出されるとき、液体粒子は、解放圧力により、なおさらに霧化される。   [0012] Finally, the nozzle assembly includes a fourth stage that includes a number of discharge orifices 30 at the spray tip, the orifices 30 being circumferentially spaced with respect to the impingement pin 28, and an expansion chamber. It is an exit from. In the illustrated embodiment, the discharge orifice 30 is angled outwardly with respect to the longitudinal axis of the nozzle assembly. When the mixture with the air stream is released into the atmosphere through the plurality of orifices 30, the liquid particles are even further atomized by the release pressure.

[0013]上記の４ステージ式スプレーノズル組立体は、液体スプレー、特にアンモニア及び尿素の液体スプレーを、燃焼ガス流中に、より低圧の加圧空気を用いる条件で効率的に噴霧することが分かった。特定の例として、図１に示した構造を有し、且つ６つの放出オリフィス及び４つのクロスホールを含むノズルが、以下の相対寸法を有して良好な動作結果をもたらした。

Figure 0004417245
[0013] The four-stage spray nozzle assembly described above has been found to efficiently spray liquid sprays, particularly liquid sprays of ammonia and urea, in a combustion gas stream under conditions using lower pressure pressurized air. It was. As a specific example, a nozzle having the structure shown in FIG. 1 and including six discharge orifices and four crossholes gave good operating results with the following relative dimensions.
Figure 0004417245

[0014]表中に記載した面積は、放出オリフィス３０の各々及びクロスホール１５の各々のためのものである。   [0014] The areas listed in the table are for each of the discharge orifices 30 and each of the cross holes 15.

[0015]ここで、図２をより詳細に参照すると、本発明に従うスプレーノズル組立体の別の実施形態である組立体３５が示されており、組立体３５は、図１に示したスプレーノズル組立体とほぼ類似の第１の混合ステージ及び第２の混合ステージを含むが、多数の放出オリフィスが設けられたスプレー先端及び衝突ピンは有さない。その代わりに、スプレーノズル組立体３５は、中央放出オリフィス３９と、内側に収束したエアガイドチャンバ４０とを有するスプレー先端３８を有する。エアガイドチャンバ４０は、霧化された液体を方向付け且つ加速させて中央放出オリフィス３０に通す。   [0015] Referring now in more detail to FIG. 2, there is shown an assembly 35, which is another embodiment of a spray nozzle assembly according to the present invention, the assembly 35 comprising the spray nozzle shown in FIG. It includes a first mixing stage and a second mixing stage that are substantially similar to the assembly, but without a spray tip and impingement pin provided with multiple discharge orifices. Instead, the spray nozzle assembly 35 has a spray tip 38 having a central discharge orifice 39 and an air guide chamber 40 converged inwardly. The air guide chamber 40 directs and accelerates the atomized liquid through the central discharge orifice 30.

[0016]図１の実施形態に示したような衝突ピンがなくとも、複数の混合ステージを有するノズル組立体３５は、クロスホール１５を備えたスプレー管１１、内側に拡がった形状のエアガイド２２及びエアアニュラス２４、並びに、内向きに先細状にされた混合チャンバ４０を含んで、比較的低い空気圧で尿素を効率的に、ガススクラビングにて有効に用いられるように霧化することが分かった。実際、図２のスプレーノズル組立体３５は、尿素の噴霧に有利に用いられることが分かった。なぜなら、内向きに先細状にされた混合チャンバ４０が放出オリフィス３９と直接連通し、液体の迅速なスプレー放出を、尿素を結晶化させる傾向を全く有さずに可能にするからである。   [0016] Even without a collision pin as shown in the embodiment of FIG. 1, the nozzle assembly 35 having a plurality of mixing stages includes a spray tube 11 having a cross hole 15 and an air guide 22 having an inwardly extending shape. And the air annulus 24 and the inwardly tapered mixing chamber 40 have been found to atomize urea efficiently and effectively for use in gas scrubbing at relatively low air pressure. . In fact, it has been found that the spray nozzle assembly 35 of FIG. 2 is advantageously used for spraying urea. This is because the inwardly tapered mixing chamber 40 is in direct communication with the discharge orifice 39, allowing rapid spray release of the liquid without any tendency to crystallize urea.

[0017]特定の例として、図２に示した構造を有するノズルが、以下の相対寸法を有して良好な動作結果をもたらした。

Figure 0004417245
[0017] As a specific example, a nozzle having the structure shown in FIG. 2 gave good operating results with the following relative dimensions.
Figure 0004417245

[0018]０．５ＧＰＭのノズルは３つのクロスホール１５を有し、その他のノズルの各々は、４つのクロスホール１５を有する。記載されている寸法はクロスホール１５の各々のためのものである。   [0018] A 0.5 GPM nozzle has three crossholes 15 and each of the other nozzles has four crossholes 15. The dimensions described are for each of the cross holes 15.

[0019]本文中に記載した公開公報、特許出願及び特許を含む全ての参考文献を援用して本文の記載の一部とし、これは、各参考文献を個々に且つ特定的に示して援用し、本文の記載の一部とする場合と同程度に、且つ、本文中にその全てを説明する場合と同程度に行われる。   [0019] All references, including publications, patent applications and patents mentioned in the text, are incorporated herein by reference and are incorporated herein by reference, individually and specifically. This is performed to the same extent as when it is a part of the description of the text and to the same extent as when all of the text is described in the text.

[0020]本発明の記載に関する（特に、特許請求の範囲に関する）用語「或る」("a"，an")及び「その」("the")、並びに類似の用語の使用は、特に指示がなく、また文脈と明確に矛盾しなければ、単数及び複数の両方を包含するとみなされるものとする。用語「含む」("comprising")、「有する」("having")、「含む」("including")及び「含有する」("containing")は、特に言及していなければ、制限のない用語（すなわち、「含む」を意味するがそれに限定されない）とみなすものとする。本文中に詳細に記載した値の範囲は、特に指示がなければ、範囲内にある独立した各々の値を個々に言及する簡単な方法としての機能を意図されているに過ぎず、独立した各々の値は明細書中に、個別に記載されているかのように組み込まれる。本文中に記載された全ての方法は、本文中に特に指示がなく、また文中の前後関係と明確に矛盾しなければ、任意の適切な順序で実行されることができる。本文中に示された、任意の及び全ての例、又は例示のための言語（例えば、「例えば」("such as")）の使用は、本発明を明瞭化するためのものに過ぎず、特許請求の範囲に特に記載されていなければ、本発明の範囲を限定しない。明細書中のいずれの言語も、特許請求の範囲内にない任意の要素を本発明の実施に必須であるように示していると解釈されてはならない。   [0020] The terms “a” (“a”, “an”) and “its” (“the”), as well as the use of similar terms relating to the description of the invention (especially with respect to the claims), are specifically indicated And unless otherwise clearly contradicted by context, shall be considered to include both singular and plural. The terms “comprising”, “having”, “including” and “containing” are open-ended terms unless otherwise stated. (I.e., mean "including", but not limited to). The ranges of values described in detail in this text are intended to serve as simple methods for individually referring to each independent value within the range, unless otherwise indicated. The values of are incorporated into the specification as if they were individually described. All methods described herein can be performed in any suitable order unless otherwise indicated herein and clearly contradicted by context. The use of any and all examples, or language for illustration (eg, “such as”), as set forth in the text is only intended to clarify the present invention, Unless specifically stated in the claims, the scope of the present invention is not limited. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.

[0021]本発明を実行するために最良であると発明者が考える形態を含む本発明の好ましい実施形態を本文に記載した。上記の詳細な説明を読めば、これらの好ましい実施形態の変型例が当業者に明らかになろう。発明者は、このような変型例を当業者が適切に用いることを期待し、また、発明者は、本発明が、本文に詳細に記載した以外のやり方で実施されることを意図している。従って、本発明は添付の特許請求の範囲に記載された主題の修正物及び均等物の全てを、適用法令により許容されるように含む。さらに、上記の要素の、それらの可能な変型の全てにおける任意の組合せが、本文中に特に指示がなく、また文脈と明確に矛盾しなければ、本発明に包含される。   [0021] Preferred embodiments of this invention are described herein, including the forms that the inventor considers best to practice the invention. Variations of these preferred embodiments will become apparent to those skilled in the art after reading the above detailed description. The inventor expects those skilled in the art to properly use such variations, and the inventor intends the invention to be implemented in ways other than those described in detail herein. . Accordingly, this invention includes all modifications and equivalents of the subject matter recited in the claims appended hereto as permitted by applicable law. Moreover, any combination of the above elements in all possible variations thereof is encompassed by the invention unless otherwise indicated herein and clearly contradicted by context.

本発明に従う例示的なスプレーノズル組立体の縦方向断面図である。1 is a longitudinal cross-sectional view of an exemplary spray nozzle assembly according to the present invention. FIG. 本発明に従うスプレーノズル組立体の別の実施形態の縦方向断面図である。FIG. 6 is a longitudinal cross-sectional view of another embodiment of a spray nozzle assembly according to the present invention.

Claims (3)

液体を霧化及び噴霧するためのノズルであって、
下流側に向かうにつれて縮径する部分を有し、液体の流れを第１の軸に沿って方向付けるための、長手の液体流路と、
前記縮径する部分と接続され、前記縮径する部分によって下流側に向かうにつれて速度が高められた液体が流れ込む液体オリフィスと、
前記液体オリフィスの出口と対向する第１の衝突面を有し、前記液体オリフィスの出口と離れた位置に配置された端壁と、
前記液体オリフィスの出口と前記第１の衝突面との間に位置しており、前記第１の軸に対して垂直に交差する第２の軸に沿って延びる、複数の交差横断通路と、
前記複数の交差横断通路の出口を取り囲むように配置された環状空気流路と、
前記複数の交差横断通路及び前記環状空気流路の下流に配置された膨張チャンバと、
前記複数の交差横断通路及び前記環状空気流路の下流に画成された第２の衝突面を有し、前記膨張チャンバ内に配置された衝突要素と、
前記衝突要素を囲むと共に前記衝突要素の下流に位置するように前記膨張チャンバの底部に設けられた、外部と前記膨張チャンバの内部とを連通する複数の放出オリフィスとを備え、
前記液体オリフィスを通って流れる液体は、前記第１の衝突面に衝突して細分化されて横方向に拡散し、前記複数の交差横断通路の出口を通って分散して、前記環状空気流路を流れる空気と衝突して前記膨張チャンバに向けて放出され、前記第２の衝突面に衝突して再び横方向に拡散した後、前記複数の放出オリフィスを通じて外部に噴霧されるノズル。A nozzle for atomizing and spraying a liquid,
A longitudinal liquid flow path having a portion that decreases in diameter toward the downstream side and directing the flow of liquid along the first axis ;
A liquid orifice connected to the portion to be reduced in diameter and into which a liquid whose velocity is increased toward the downstream side by the portion to be reduced in diameter;
An end wall having a first impingement surface facing the outlet of the liquid orifice and disposed away from the outlet of the liquid orifice;
Located between the outlet and the first impact surface of the liquid orifice, extending along a second axis intersection difference perpendicular to the first axis, and a plurality of intersecting cross passage,
An annular air flow path disposed so as to surround an outlet of the plurality of crossing transverse passages ;
A bulging Zhang chamber disposed downstream of the plurality of intersecting transverse passage and said annular air passage,
A collision element having a second collision surface defined downstream of the plurality of intersecting transverse passages and the annular air flow path and disposed in the expansion chamber;
A plurality of discharge orifices that are provided at the bottom of the expansion chamber so as to surround the collision element and to be positioned downstream of the collision element, and communicate with the outside and the inside of the expansion chamber ;
The liquid flowing through the liquid orifice collides with the first impingement surface, is subdivided and diffuses in the lateral direction, and is distributed through the outlets of the plurality of intersecting transverse passages to form the annular air flow path. released toward the expansion chamber to collide with the air flowing through, was diffused in the horizontal direction again impinges on the second impact surface, Ru is sprayed to the outside through the plurality of discharge orifice nozzle. 前記環状空気流路は、下流側に向かうにつれて縮径するエアガイドを有しており、  The annular air flow path has an air guide that decreases in diameter toward the downstream side,
前記環状空気流路を通る空気は、前記エアガイドによって下流側に向かうにつれて速度が高められる、請求項１に記載のノズル。  The nozzle according to claim 1, wherein the speed of the air passing through the annular air flow path is increased toward the downstream side by the air guide. 前記エアガイドは、丸みを帯びつつ内側に向けて突出している、請求項２に記載のノズル。 The air guide, while rounded projecting inwardly, Bruno nozzle according to claim 2.
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US20040222317A1 (en) 2004-11-11
US7036753B2 (en) 2006-05-02
WO2003095097A1 (en) 2003-11-20
AU2003267884A1 (en) 2003-11-11
ATE470505T1 (en) 2010-06-15
EP1501638A4 (en) 2007-08-29
CN1652876A (en) 2005-08-10
DE60332935D1 (en) 2010-07-22
EP1501638B1 (en) 2010-06-09
JP2005524527A (en) 2005-08-18
CA2495712C (en) 2011-02-01
EP1501638A1 (en) 2005-02-02
CN1298434C (en) 2007-02-07

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